Ya carry a full keg (or half keg or ponykeg based on experience-) to the top of a mountain course, drink it and then bring the keg back down as gracefully as possible.
It's an ol' Marine drill. Just finishing the keg is a real thrill all by its lone self. ya have to pace yurself tho.
Is there anything our wonderful Marines can't do? I would have thought the movie Beerfest would have been more educational.